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Finding the Fourth Proportional to 86,313.76, 119,084.48 and 70,370.80

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Solution

The fourth proportional to 86,313.76, 119,084.48 and 70,370.80 is: 97,088.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,313.76 : 119,084.48 = 70,370.80 : x
  2. Step 2: Convert to fraction form
    86,313.76/119,084.48 = 70,370.80/x
  3. Step 3: Cross multiply
    86,313.76x = 119,084.48 × 70,370.80
  4. Step 4: Simplify right side
    86,313.76x = 8,380,070,125.18
  5. Step 5: Solve for x
    x = 8,380,070,125.18/86,313.76
  6. Step 6: Final answer
    x = 97,088.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.